As technology keeps changing, states keep working on alternatives or add-ons to the gas tax.

Plan offers two methods to determine inspection intervals. States could use one, the other, or a mix of both options.

A $19.1-billion package has $3.3 billion for Corps civil works and $2.7 billion for DOD to rebuild storm-battered bases.

Total structurally deficient bridges dipped by just 567 in 2018, compared with annual average decline of 1,700 in previous five years.

Officials will use design-build to cut 18 months and $35 million from earlier estimates.

The American bridge design and construction industry has turned the corner in embracing tools such as 4D modeling, public-private partnerships and drones.